The Role of Certified Translation in Document Legalisation

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Raheleh Ghiasvand
Wed Aug 13 2025

When preparing legal documents for international use, you may find that a certified translation is a crucial part of the process. Whether it's for immigration, business dealings, or academic purposes, many countries require documents to be translated by a certified translator before they can be legalised. But what exactly is certified translation, and how does it impact document legalisation? Keep reading to understand why certified translation is essential for legalising documents and how you can ensure a smooth process, especially if you're in need of Apostille services in London .

What is Certified Translation and Why is it Necessary?

Certified translation is a translation carried out by a qualified translator who affirms that the translated document is an accurate representation of the original. The translator provides a certificate stating their credentials and confirming the accuracy of the translation. In legal processes, especially in international matters, document legalisation typically requires a certified translation.

When documents need to be submitted to foreign authorities, whether for visa applications, academic degrees, or business contracts, the translated text must meet certain legal standards. Without a certified translation, even if your document is accurate in content, it may not be accepted by international authorities. This could delay important procedures or invalidate your submission altogether. Certified translations ensure that documents are correctly interpreted and legally recognised internationally.

The Importance of Certified Translation in Document Legalisation

Document legalisation is the process by which documents are validated for use in a foreign country. This typically involves obtaining an apostille or consular legalisation, depending on the country of submission. If the document is not accurately translated, it may not be understood by foreign officials, potentially causing delays or rejections. Certified translation plays a vital role in document legalisation, as it guarantees that the content of the original document is accurately conveyed and understood in the target language. Inaccurate translations can result in legal issues, misunderstandings, or outright rejections.

Common Situations Requiring Certified Translation

Certified translations are often required in various legal situations:

1. Immigration: Personal documents such as birth certificates, marriage certificates, or police clearance certificates must be translated when applying for a visa or residence permit.

2. Legal Contracts: Business agreements or legal contracts involving international parties require certified translations to be legally recognised in different jurisdictions.

3. Academic Documents: Transcripts, diplomas, and certificates often need to be translated and certified when applying for international study programs or transferring credits.

4. Medical Documents: Health records or medical histories may need to be translated when applying for medical visas or seeking medical treatment abroad.

How Certified Translation Works in Document Legalisation

Certified translation for document legalisation is more than just a linguistic task—it is about meeting specific legal standards and ensuring that the document is valid in the target country. Here's how the process works:

Step 1: Choosing a Qualified Translator

To begin, you must select a certified translator who has expertise in the subject matter of the document. For example, translating legal documents requires someone with knowledge of legal terminology in both languages. The translator must also be officially recognised as competent to provide certified translations.

Step 2: Translation of the Document

Once the translator is selected, they will translate the document while ensuring that all technical terms, legal jargon, and context are preserved accurately. Legal translators often work with a legal dictionary and have experience in translating documents that require precise wording.

Step 3: Certification of the Translation

After completing the translation, the translator provides a certification statement, declaring that the translation is accurate and complete. This certificate usually includes the translator's name, qualifications, and professional credentials, establishing their competency.

Step 4: Legalisation of the Document

The final step in document legalisation is to authenticate the document through the appropriate legal channels, such as obtaining an apostille or consular legalisation. An apostille is typically required for documents being used between countries that are signatories to the Hague Convention . If the country does not recognise the Hague Convention, consular legalisation might be necessary.

Benefits of Certified Translation for Legalisation

1. Ensures Legal Validity: Certified translations comply with legal requirements and are recognised internationally, making your documents legally binding in the target country.

2. Reduces the Risk of Rejection: Certified translations are accurate and verified, which reduces the likelihood of your documents being rejected by foreign authorities.

3. Faster Processing: When documents are properly translated and certified, they are processed more quickly by legal and government institutions.

4. Accurate Legal Language: Certified translators are skilled at using the correct legal terminology, ensuring that your document is both linguistically accurate and legally sound.

5. Peace of Mind: Working with certified translators offers confidence that your document will be accepted by foreign authorities, preventing delays and complications.

Sum Up

Certified translation is an indispensable part of document legalisation, ensuring that your documents are correctly understood and legally recognised in foreign countries. Whether you’re applying for a visa, submitting academic records, or finalising business contracts, accurate certified translations can save you time and hassle during the process.

Additionally, if you’re based in London and need an apostille for your documents, we at Writeco offer apostille services in London to help you complete the legalisation process quickly and efficiently. Are you ready to get your documents certified and legalised? Contact us today to arrange your certified translation and apostille services for smooth international transactions.

Frequently Asked Questions

Do all documents require certified translation for legalisation?

Not all documents need certified translation. However, official documents like immigration forms, legal contracts, academic records, and medical certificates generally require certified translations to be accepted by foreign authorities.

How long does a certified translation take?

The time it takes for certified translation depends on the document’s length and complexity. On average, a certified translation can take a few days to a couple of weeks. Make sure to account for extra time when planning for document legalisation.

Can I translate the document myself?

While you may be able to translate a document on your own, most foreign authorities will not accept self-translated documents. Only a certified translator can guarantee the document’s accuracy and legal validity.

Is the cost of certified translation worth it?

Certified translations can be more expensive than regular translations, but the cost is a worthwhile investment when dealing with legal processes. A certified translation ensures that your documents are properly recognised and validated in foreign jurisdictions.

Where can I get certified translation services?

Certified translation services are available through translation agencies, professional translation platforms, or individual translators. It’s important to ensure that the translator has the necessary credentials and experience to handle legal documents.

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Raheleh Ghiasvand Ghazvini
About the Author

Raheleh Ghiasvand

Raheleh is a UK-based Chartered Linguist and ISO-qualified member of the Institute of Translation and Interpreting, with over 20 years of experience. She is a certified translator and cultural specialist. In 2022, she founded Writeco, a London-based language service provider offering certified translations, notarisation, and apostille services in all major languages.

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